The Whisper 200's 9-foot (2. 7 m) blades create almost twice the swept area of the Whisper 100, and yield up to 200 kilowatt hours a month in a 12 mph (5. A high-voltage model is available for transmission over longer distances. Route 66 Flagstaff, Arizona 86001 Phone: (928)-779-9463 Fax: (928)-779-1485 Email: info@windenergy. The Whisper 200 and. Formerly the Whisper H80, the Whisper 200 wind turbine has been updated for 2013 with new features and added flexibility for your renewable energy system. It features a patented side-furling design that protects it from high winds and a Whisper controller that regulates voltage and monitors system performance.